Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 268
ual feed-motion. To avoid the necessity of having a mandrel for every size of hole, what are termed expandingmandrels are sometimes employed. Such a mandrel is shown in Figs. 2652 and 2653. a is the stockor body of the mandrel; b is a cone solid thereon, and containing four dovetailed taper slots,… … 2650.
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